Now, state authorities have seized property from several businesses at Oahu's Dillingham Airfield.

Agents confiscated surplus aircraft and boats and even large fuel tanks. They also cited tenants for storing guns and ammunition and for having a pair of goats.

But companies believe it's part of the state's plan to shut down the airport as it prepares for a possible land transfer to the federal government.

"Yeah I think they're trying to run us off the airport," said Frank Hinshaw, president of Skydive Hawaii.

"We've gotten $75,000 ... $80,000 confiscated by the state."

Scott Blackley, owner of fuel supplier North Shore Aviation Services Inc. Said the state is applying its rules unevenly.

He said sheriffs told him to remove his goats, even though other tenants weren't ordered to remove their pets from the premises.

"They just think they can do anything and they are absolutely unaccountable to anybody, Blackley said.

The seizures come as the state Department of Transportation is mulling a plan to return the airport to the U.S. Army. Tenants say the move will uproot skydiving and other commercial interests that employ more than 150 people at Dillingham.

But the state says the recent seizures were driven by safety concerns and that the companies violated their airport leases.

It says it plans to return the confiscated items as long as tenants do not bring them back to Dillingham Airfield.